Petroleum blue burner.



No. 731,459. PATENTED JUNE 23, 1903.

- H, HURWITZ & A. SGHAPIRO.

PETROLEUM BLUE BURNER. APPILIOATION rman snm. 29. 1902. $10 MODEL. I z sums-$113M 1.

No. 731,459. PATENTED JUNE 23, 1903.

- H. HURWITZ & A. SGH APIRCL- PETROLEUM BLUE BURNER.

APPLIOATIOH rum) 52M. 29, 1902,

no monnn. z sums-sum 2.

fifrzesjzs 451 wmia m TMD 0mm PEYERs c0. Pam ammo vusumuon, u c

- UNITED STATES Patented June 23, 1903.

ATENT Urricn.

PETROLEUM BLUE BURNER.

SPECIFICATION forming part of Letters Patent No. 731,459, dated June 23, 1903.

' Application filed $eptember 29,1902. Serial No. 125,253. (No model.)

T at whom it may concern:

Be it known that we, HERMANN HURWITZ,

manufacturer, a subject of the King of Prussia, German Emperor, and AISIK SoHAPIRo, manufacturer, a subject of the Emperor of Russia, both residents of 56 Stralauerstrasse, Berlin, Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Petroleum Blue Burners, of

which the following is an exact specification. Our invention relates to improvementsin petroleum blue burners, and more especially to improvements in the burner described in the former United States patent, No. 683,767, dated October 1, 1901, and has especially for its purpose to providea construction by means of which it is attained that the burner can more advantageously be used forheating purposes.

In burners for heating purposes it is not only necessary to provide a blue flame of a certain shape, but it is most important that the heating effect of the flame should be increased as much as possible, and this effectcan only be attained by increasing the evaporation of the petroleum. We attain this purpose by means of the construction illustrated in the accompanying drawings, in Which- Figure 1 is a vertical section of our improved burner. Fig. 2 is a plan view of the same.

a is a petroleum-reservoir in which the unmovable wick b is situated. This wick, which preferably consists of a woven fabric covered with a layer of wool or the like, is situated between the wick-tubes c and (Z, the outer Wick-tube 0 being higher than the inner wicktube (Z. In this inner wick-tube a cylinder 6 is provided, which cylinder is fixed to a tubular shaft f. This shaft f is movable upward and downward, so that the free inner surface of the wick b can be enlarged or diminished by shifting this shaft, andherewith the cylinder e,fixed to'the same, upward and downward. To the tubular shaft the burner-cap g is fixed, so that this burner-cap follows the up-anddown movement of the cylinder 6. The partf of the tubular shaft f situated above the cap g is perforated. Around the outer wick-tube a draft-channel .9, having an annular cross-section, is situated. This draft-channel is closed on its lower side and connected to the outside by means of several channels q. The spaces between the channels lead from the reservoir a through the outer Wick-tube o to the wick b. The draft-channel s is provided on the upper end with an annular cap 7c, the inner hole of which is so great that between the burnercap and this annular cap an annular slot for the flame remains free. The cap 70 has the purpose of throttling the flame.

In this burner three air currents arise, which flow to the flameviz., first, the aircurrent flowing through the channel 8 to the outside of the flame; second, the air-current flowing through the inner Wick-tube d and the cylinder e to the inside of the wick, and, third, the air-current flowing through the tubular shaft f and the perforations of the upper part f of the same.

It will be understood that the tube f may have any convenient form. It may also be open on its upper end; but most advantageously a perforated cylindrical tube is provided, as shown'in the drawings, which leads the air nearly up to the top of the flame and effects an equal burning by sending small airjets in all directions to the flame.

The up-and-down movement of the tubular shaft f, with the cylinder 6 and the burnercap 9 fixed to the same, is effected by means of a double-armed lever fixed to the shaft, the arms 2' and h of which are guided in guideslots Z and Z, inclined in different directions. One of the arms 2' is prolonged, so as to project over the outer circumference of the reservoir a, and is provided with a handle m. The effect of this device is as follows: If the arms h and 2 of the lever are in the position shown in the drawings, which position corresponds to the ordinary burning position of the burner, and are broughtthen to the position shown in dotted lines, the cylinder 6 is raised by the opposite inclination of the guide-rails Z and Z. The turning of the cylinder is avoided by means otspecial guidepieces or the like. The outer draft-channel s may also be modified in diderent ways; so, for instance, the reservoir ct may be connected directly to the wick all around the same up to'a certain height, so that the draft-channel sis closed on its lower end, in which case special pipes are provided which lead from the channel 8 through the wick-tube c and the wick b to the inside of the wick-tube d, so that the air can enter through the wicktube (1 and the pipes connecting this wicktube with the channel 8 to the outside of the flame. As in this case the air enters the annular draft-channel sin single jets, the effect will not be so good as in the construction shown in the drawings.

Having thus fully described the nature of our invention, what we desire to secure'by Letters Patent of the United States is 1. In a petroleum blue burner, the combination of an outer wick-tube and an inner wick-tube, with a cylinder movable up and down within this inner Wick-tube, a burner-- cap rigidly connected to the cylinder, a tubular shaft to which the burner-cap and the cylinder are fixed, means for moving this shaft upward and downward, and an annular draft-channel situated around the outer wicktube, substantially as described and for the purpose set forth.

2. In a petroleum blue burner, the combination of an outer wick-tube and an inner wick-tube, with a cylinder movable up and down within this inner wick-tube, a burnercap rigidlyconnected to the cylinder, a tubular shaft to which the burner-cap and the cylinder are fixed, this shaft being prolonged over the burner-cap and provided with perforations in this prolongation, substantially as described and for the purpose set forth.

3. In a petroleum blue burner, the combination of an outer wick-tube and an inner wick-tube, with a cylinder movable up and down Within this inner wick-tube, a burnercap rigidly connected to the cylinder, a tubular shaft to which the burner-cap and the cylinder are fixed, a double-armed lever fixed to the tubular shaft, guide-rails inclined in difierent directions, in which the arms of the lever are guided, and an annular draft-channel situated around the outer wick-tube, substantially as described and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

HERMANN I-IURWITZ. AISIK SCI-IAPIRO.

Witnesses:

WOLDEMAR HAUPT, HENRY HASPER. 

